25270577490 has 32 divisors (see below), whose sum is σ = 61092092160. Its totient is φ = 6689631104.

The previous prime is 25270577483. The next prime is 25270577491. The reversal of 25270577490 is 9477507252.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25270577491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3070170 + ... + 3078389.

It is an arithmetic number, because the mean of its divisors is an integer number (1909127880).

Almost surely, 2^25270577490 is an apocalyptic number.

25270577490 is an abundant number, since it is smaller than the sum of its proper divisors (35821514670).

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

25270577490 is a wasteful number, since it uses less digits than its factorization.

25270577490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6148706.

The product of its (nonzero) digits is 1234800, while the sum is 48.

The spelling of 25270577490 in words is "twenty-five billion, two hundred seventy million, five hundred seventy-seven thousand, four hundred ninety".