1520425247 has 8 divisors (see below), whose sum is σ = 1661910480. Its totient is φ = 1379484160.

The previous prime is 1520425241. The next prime is 1520425259. The reversal of 1520425247 is 7425240251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1520425247 - 2⁸ = 1520424991 is a prime.

It is a super-2 number, since 2×1520425247² = 4623385863430022018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520425241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130178 + ... + 141375.

It is an arithmetic number, because the mean of its divisors is an integer number (207738810).

Almost surely, 2^1520425247 is an apocalyptic number.

1520425247 is a deficient number, since it is larger than the sum of its proper divisors (141485233).

1520425247 is a wasteful number, since it uses less digits than its factorization.

1520425247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272073.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 1520425247 is about 38992.6306755520. The cubic root of 1520425247 is about 1149.8866295297.

Adding to 1520425247 its reverse (7425240251), we get a palindrome (8945665498).

The spelling of 1520425247 in words is "one billion, five hundred twenty million, four hundred twenty-five thousand, two hundred forty-seven".