1525313992 has 16 divisors (see below), whose sum is σ = 2862390960. Its totient is φ = 762009744.

The previous prime is 1525313971. The next prime is 1525314061. The reversal of 1525313992 is 2993135251.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70818 + ... + 89809.

It is an arithmetic number, because the mean of its divisors is an integer number (178899435).

Almost surely, 2^1525313992 is an apocalyptic number.

It is an amenable number.

1525313992 is a deficient number, since it is larger than the sum of its proper divisors (1337076968).

1525313992 is a wasteful number, since it uses less digits than its factorization.

1525313992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161820 (or 161816 counting only the distinct ones).

The product of its digits is 72900, while the sum is 40.

The square root of 1525313992 is about 39055.2684282159. The cubic root of 1525313992 is about 1151.1177518034.

The spelling of 1525313992 in words is "one billion, five hundred twenty-five million, three hundred thirteen thousand, nine hundred ninety-two".