20746152925 has 6 divisors (see below), whose sum is σ = 25725229658. Its totient is φ = 16596922320.

The previous prime is 20746152913. The next prime is 20746152979. The reversal of 20746152925 is 52925164702.

It can be written as a sum of positive squares in 3 ways, for example, as 2305056121 + 18441096804 = 48011^2 + 135798^2 .

It is not a de Polignac number, because 20746152925 - 2²⁵ = 20712598493 is a prime.

It is a super-2 number, since 2×20746152925² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 414923034 + ... + 414923083.

Almost surely, 2^20746152925 is an apocalyptic number.

20746152925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20746152925 is a deficient number, since it is larger than the sum of its proper divisors (4979076733).

20746152925 is an equidigital number, since it uses as much as digits as its factorization.

20746152925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829846127 (or 829846122 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 20746152925 in words is "twenty billion, seven hundred forty-six million, one hundred fifty-two thousand, nine hundred twenty-five".