25430653531 has 8 divisors (see below), whose sum is σ = 27168649280. Its totient is φ = 23732611848.

The previous prime is 25430653517. The next prime is 25430653543. The reversal of 25430653531 is 13535603452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25430653531 - 2¹⁷ = 25430522459 is a prime.

It is a super-2 number, since 2×25430653531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25430653511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9987201 + ... + 9989746.

It is an arithmetic number, because the mean of its divisors is an integer number (3396081160).

Almost surely, 2^25430653531 is an apocalyptic number.

25430653531 is a deficient number, since it is larger than the sum of its proper divisors (1737995749).

25430653531 is a wasteful number, since it uses less digits than its factorization.

25430653531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19977033.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 25430653531 in words is "twenty-five billion, four hundred thirty million, six hundred fifty-three thousand, five hundred thirty-one".