25554245431 has 48 divisors (see below), whose sum is σ = 30722106240. Its totient is φ = 21111552000.

The previous prime is 25554245429. The next prime is 25554245441. The reversal of 25554245431 is 13454245552.

It is not a de Polignac number, because 25554245431 - 2¹ = 25554245429 is a prime.

It is a super-2 number, since 2×25554245431² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25554245401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37970311 + ... + 37970983.

It is an arithmetic number, because the mean of its divisors is an integer number (640043880).

Almost surely, 2^25554245431 is an apocalyptic number.

25554245431 is a deficient number, since it is larger than the sum of its proper divisors (5167860809).

25554245431 is a wasteful number, since it uses less digits than its factorization.

25554245431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 1037 counting only the distinct ones).

The product of its digits is 480000, while the sum is 40.

The spelling of 25554245431 in words is "twenty-five billion, five hundred fifty-four million, two hundred forty-five thousand, four hundred thirty-one".