25172743629 has 16 divisors (see below), whose sum is σ = 36674081280. Its totient is φ = 15231549360.

The previous prime is 25172743619. The next prime is 25172743639. The reversal of 25172743629 is 92634727152.

It is an interprime number because it is at equal distance from previous prime (25172743619) and next prime (25172743639).

It is not a de Polignac number, because 25172743629 - 2¹⁶ = 25172678093 is a prime.

It is a super-2 number, since 2×25172743629² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25172743619) 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, 595737 + ... + 636590.

It is an arithmetic number, because the mean of its divisors is an integer number (2292130080).

Almost surely, 2^25172743629 is an apocalyptic number.

It is an amenable number.

25172743629 is a deficient number, since it is larger than the sum of its proper divisors (11501337651).

25172743629 is a wasteful number, since it uses less digits than its factorization.

25172743629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232960.

The product of its digits is 1270080, while the sum is 48.

The spelling of 25172743629 in words is "twenty-five billion, one hundred seventy-two million, seven hundred forty-three thousand, six hundred twenty-nine".