25020307290 has 64 divisors (see below), whose sum is σ = 65636853120. Its totient is φ = 6053571840.

The previous prime is 25020307289. The next prime is 25020307303. The reversal of 25020307290 is 9270302052.

It is a happy number.

25020307290 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93492 + ... + 242448.

It is an arithmetic number, because the mean of its divisors is an integer number (1025575830).

Almost surely, 2^25020307290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25020307290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32818426560).

25020307290 is an abundant number, since it is smaller than the sum of its proper divisors (40616545830).

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

25020307290 is a wasteful number, since it uses less digits than its factorization.

25020307290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149487.

The product of its (nonzero) digits is 7560, while the sum is 30.

The spelling of 25020307290 in words is "twenty-five billion, twenty million, three hundred seven thousand, two hundred ninety".