1520012025 has 36 divisors (see below), whose sum is σ = 3111443712. Its totient is φ = 694861920.

The previous prime is 1520011991. The next prime is 1520012029. The reversal of 1520012025 is 5202100251.

1520012025 is a `hidden beast` number, since 1 + 520 + 0 + 120 + 25 = 666.

It is not a de Polignac number, because 1520012025 - 2⁷ = 1520011897 is a prime.

It is a super-2 number, since 2×1520012025² = 4620873112289201250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1520011989 and 1520012007.

It is not an unprimeable number, because it can be changed into a prime (1520012029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 480969 + ... + 484118.

It is an arithmetic number, because the mean of its divisors is an integer number (86428992).

Almost surely, 2^1520012025 is an apocalyptic number.

1520012025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1520012025 is an abundant number, since it is smaller than the sum of its proper divisors (1591431687).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1520012025 is a wasteful number, since it uses less digits than its factorization.

1520012025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965110 (or 965102 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1520012025 is about 38987.3315963019. The cubic root of 1520012025 is about 1149.7824478199.

Adding to 1520012025 its reverse (5202100251), we get a palindrome (6722112276).

It can be divided in two parts, 15200 and 12025, that added together give a square (27225 = 165²).

The spelling of 1520012025 in words is "one billion, five hundred twenty million, twelve thousand, twenty-five".