1523720025 has 48 divisors (see below), whose sum is σ = 2858745600. Its totient is φ = 795343680.

The previous prime is 1523719999. The next prime is 1523720069. The reversal of 1523720025 is 5200273251.

It is not a de Polignac number, because 1523720025 - 2²³ = 1515331417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 7711 + ... + 55739.

It is an arithmetic number, because the mean of its divisors is an integer number (59557200).

Almost surely, 2^1523720025 is an apocalyptic number.

1523720025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1523720025 is a deficient number, since it is larger than the sum of its proper divisors (1335025575).

1523720025 is a wasteful number, since it uses less digits than its factorization.

1523720025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48095 (or 48084 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 1523720025 is about 39034.8565387398. The cubic root of 1523720025 is about 1150.7166358729.

Adding to 1523720025 its reverse (5200273251), we get a palindrome (6723993276).

The spelling of 1523720025 in words is "one billion, five hundred twenty-three million, seven hundred twenty thousand, twenty-five".