20525942970 has 256 divisors, whose sum is σ = 62775336960. Its totient is φ = 4727808000.

The previous prime is 20525942933. The next prime is 20525942971. The reversal of 20525942970 is 7924952502.

20525942970 is a `hidden beast` number, since 2 + 0 + 52 + 594 + 2 + 9 + 7 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (20525942971) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11396070 + ... + 11397870.

It is an arithmetic number, because the mean of its divisors is an integer number (245216160).

Almost surely, 2^20525942970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20525942970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31387668480).

20525942970 is an abundant number, since it is smaller than the sum of its proper divisors (42249393990).

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

20525942970 is a wasteful number, since it uses less digits than its factorization.

20525942970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 20525942970 in words is "twenty billion, five hundred twenty-five million, nine hundred forty-two thousand, nine hundred seventy".