25011311245531 has 16 divisors (see below), whose sum is σ = 27064792435968. Its totient is φ = 22976350135200.

The previous prime is 25011311245507. The next prime is 25011311245549. The reversal of 25011311245531 is 13554211311052.

It is a cyclic number.

It is not a de Polignac number, because 25011311245531 - 2¹⁵ = 25011311212763 is a prime.

It is a super-2 number, since 2×25011311245531² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25011311245331) 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, 40141866 + ... + 40760176.

It is an arithmetic number, because the mean of its divisors is an integer number (1691549527248).

Almost surely, 2^{25011311245531} is an apocalyptic number.

25011311245531 is a deficient number, since it is larger than the sum of its proper divisors (2053481190437).

25011311245531 is a wasteful number, since it uses less digits than its factorization.

25011311245531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633282.

The product of its (nonzero) digits is 18000, while the sum is 34.

Adding to 25011311245531 its reverse (13554211311052), we get a palindrome (38565522556583).

The spelling of 25011311245531 in words is "twenty-five trillion, eleven billion, three hundred eleven million, two hundred forty-five thousand, five hundred thirty-one".