25545695454 has 48 divisors (see below), whose sum is σ = 56314861200. Its totient is φ = 8367815808.

The previous prime is 25545695449. The next prime is 25545695467. The reversal of 25545695454 is 45459654552.

25545695454 is a `hidden beast` number, since 2 + 5 + 54 + 56 + 95 + 454 = 666.

It is a super-2 number, since 2×25545695454² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25545695454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212212 + ... + 310040.

It is an arithmetic number, because the mean of its divisors is an integer number (1173226275).

Almost surely, 2^25545695454 is an apocalyptic number.

25545695454 is an abundant number, since it is smaller than the sum of its proper divisors (30769165746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25545695454 is a wasteful number, since it uses less digits than its factorization.

25545695454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98089 (or 98086 counting only the distinct ones).

The product of its digits is 21600000, while the sum is 54.

The spelling of 25545695454 in words is "twenty-five billion, five hundred forty-five million, six hundred ninety-five thousand, four hundred fifty-four".