25533674894 has 96 divisors (see below), whose sum is σ = 52703239680. Its totient is φ = 9153321408.

The previous prime is 25533674891. The next prime is 25533674987. The reversal of 25533674894 is 49847633552.

It is a super-2 number, since 2×25533674894² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25533674891) 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, 533807 + ... + 579669.

It is an arithmetic number, because the mean of its divisors is an integer number (548992080).

Almost surely, 2^25533674894 is an apocalyptic number.

25533674894 is an abundant number, since it is smaller than the sum of its proper divisors (27169564786).

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

25533674894 is a wasteful number, since it uses less digits than its factorization.

25533674894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45934 (or 45927 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 56.

The spelling of 25533674894 in words is "twenty-five billion, five hundred thirty-three million, six hundred seventy-four thousand, eight hundred ninety-four".