20402625045 has 32 divisors (see below), whose sum is σ = 36760633344. Its totient is φ = 9573076800.

The previous prime is 20402625029. The next prime is 20402625071. The reversal of 20402625045 is 54052620402.

It is a happy number.

It is not a de Polignac number, because 20402625045 - 2⁴ = 20402625029 is a prime.

It is a super-2 number, since 2×20402625045² (a number of 21 digits) contains 22 as substring.

It is a congruent 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, 1989277 + ... + 1999506.

It is an arithmetic number, because the mean of its divisors is an integer number (1148769792).

Almost surely, 2^20402625045 is an apocalyptic number.

It is an amenable number.

20402625045 is a deficient number, since it is larger than the sum of its proper divisors (16358008299).

20402625045 is a wasteful number, since it uses less digits than its factorization.

20402625045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988833.

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 20402625045 in words is "twenty billion, four hundred two million, six hundred twenty-five thousand, forty-five".