1525564956 has 12 divisors (see below), whose sum is σ = 3559651592. Its totient is φ = 508521648.

The previous prime is 1525564933. The next prime is 1525564973. The reversal of 1525564956 is 6594655251.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 63565195 + ... + 63565218.

Almost surely, 2^1525564956 is an apocalyptic number.

It is an amenable number.

1525564956 is an abundant number, since it is smaller than the sum of its proper divisors (2034086636).

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

1525564956 is a wasteful number, since it uses less digits than its factorization.

1525564956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127130420 (or 127130418 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 48.

The square root of 1525564956 is about 39058.4812300734. The cubic root of 1525564956 is about 1151.1808805045.

The spelling of 1525564956 in words is "one billion, five hundred twenty-five million, five hundred sixty-four thousand, nine hundred fifty-six".