25440597557711 has 16 divisors (see below), whose sum is σ = 29475044080704. Its totient is φ = 21506206143744.

The previous prime is 25440597557657. The next prime is 25440597557797. The reversal of 25440597557711 is 11775579504452.

It is a de Polignac number, because none of the positive numbers 2^k-25440597557711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25440597557311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6966785 + ... + 9970821.

It is an arithmetic number, because the mean of its divisors is an integer number (1842190255044).

Almost surely, 2^{25440597557711} is an apocalyptic number.

25440597557711 is a deficient number, since it is larger than the sum of its proper divisors (4034446522993).

25440597557711 is a wasteful number, since it uses less digits than its factorization.

25440597557711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020690.

The product of its (nonzero) digits is 61740000, while the sum is 62.

The spelling of 25440597557711 in words is "twenty-five trillion, four hundred forty billion, five hundred ninety-seven million, five hundred fifty-seven thousand, seven hundred eleven".