25894235479020 has 48 divisors (see below), whose sum is σ = 72534285196800. Its totient is φ = 6902231760576.

The previous prime is 25894235479009. The next prime is 25894235479033. The reversal of 25894235479020 is 2097453249852.

It is a super-2 number, since 2×25894235479020² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90408970 + ... + 90694929.

It is an arithmetic number, because the mean of its divisors is an integer number (1511130941600).

Almost surely, 2^{25894235479020} is an apocalyptic number.

25894235479020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25894235479020 is an abundant number, since it is smaller than the sum of its proper divisors (46640049717780).

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

25894235479020 is a wasteful number, since it uses less digits than its factorization.

25894235479020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181106294 (or 181106292 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 60.

The spelling of 25894235479020 in words is "twenty-five trillion, eight hundred ninety-four billion, two hundred thirty-five million, four hundred seventy-nine thousand, twenty".