25515960452 has 6 divisors (see below), whose sum is σ = 44652930798. Its totient is φ = 12757980224.

The previous prime is 25515960403. The next prime is 25515960487. The reversal of 25515960452 is 25406951552.

It can be written as a sum of positive squares in only one way, i.e., 25492592896 + 23367556 = 159664^2 + 4834^2 .

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 as a sum of consecutive naturals, namely, 3189495053 + ... + 3189495060.

It is an arithmetic number, because the mean of its divisors is an integer number (7442155133).

Almost surely, 2^25515960452 is an apocalyptic number.

It is an amenable number.

25515960452 is a deficient number, since it is larger than the sum of its proper divisors (19136970346).

25515960452 is a wasteful number, since it uses less digits than its factorization.

25515960452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378990117 (or 6378990115 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 25515960452 in words is "twenty-five billion, five hundred fifteen million, nine hundred sixty thousand, four hundred fifty-two".