25277133040 has 80 divisors (see below), whose sum is σ = 60509877120. Its totient is φ = 9813923840.

The previous prime is 25277133019. The next prime is 25277133053. The reversal of 25277133040 is 4033177252.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 25277132987 and 25277133005.

It is a congruent number.

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, 626601 + ... + 665719.

It is an arithmetic number, because the mean of its divisors is an integer number (756373464).

Almost surely, 2^25277133040 is an apocalyptic number.

25277133040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25277133040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30254938560).

25277133040 is an abundant number, since it is smaller than the sum of its proper divisors (35232744080).

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

25277133040 is a wasteful number, since it uses less digits than its factorization.

25277133040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39370 (or 39364 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 34.

The spelling of 25277133040 in words is "twenty-five billion, two hundred seventy-seven million, one hundred thirty-three thousand, forty".