1520914725 has 60 divisors (see below), whose sum is σ = 3073419360. Its totient is φ = 737402400.

The previous prime is 1520914697. The next prime is 1520914751. The reversal of 1520914725 is 5274190251.

1520914725 is a `hidden beast` number, since 1 + 520 + 91 + 47 + 2 + 5 = 666.

It is not a de Polignac number, because 1520914725 - 2⁵ = 1520914693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1520914725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 11865 + ... + 56414.

It is an arithmetic number, because the mean of its divisors is an integer number (51223656).

Almost surely, 2^1520914725 is an apocalyptic number.

1520914725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1520914725 is an abundant number, since it is smaller than the sum of its proper divisors (1552504635).

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

1520914725 is a wasteful number, since it uses less digits than its factorization.

1520914725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68312 (or 68298 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 1520914725 is about 38998.9067154452. The cubic root of 1520914725 is about 1150.0100125152.

It can be divided in two parts, 152091 and 4725, that added together give a square (156816 = 396²).

The spelling of 1520914725 in words is "one billion, five hundred twenty million, nine hundred fourteen thousand, seven hundred twenty-five".