2565390532 has 6 divisors (see below), whose sum is σ = 4489433438. Its totient is φ = 1282695264.

The previous prime is 2565390521. The next prime is 2565390551. The reversal of 2565390532 is 2350935652.

It can be written as a sum of positive squares in only one way, i.e., 2173983876 + 391406656 = 46626^2 + 19784^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320673813 + ... + 320673820.

Almost surely, 2^2565390532 is an apocalyptic number.

It is an amenable number.

2565390532 is a deficient number, since it is larger than the sum of its proper divisors (1924042906).

2565390532 is a wasteful number, since it uses less digits than its factorization.

2565390532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641347637 (or 641347635 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 40.

The square root of 2565390532 is about 50649.6844215243. The cubic root of 2565390532 is about 1368.9402591955.

The spelling of 2565390532 in words is "two billion, five hundred sixty-five million, three hundred ninety thousand, five hundred thirty-two".