20725151574 has 16 divisors (see below), whose sum is σ = 41458618800. Its totient is φ = 6906997920.

The previous prime is 20725151539. The next prime is 20725151591. The reversal of 20725151574 is 47515152702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313849 + ... + 374100.

It is an arithmetic number, because the mean of its divisors is an integer number (2591163675).

Almost surely, 2^20725151574 is an apocalyptic number.

20725151574 is an abundant number, since it is smaller than the sum of its proper divisors (20733467226).

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

20725151574 is a wasteful number, since it uses less digits than its factorization.

20725151574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692975.

The product of its (nonzero) digits is 98000, while the sum is 39.

The spelling of 20725151574 in words is "twenty billion, seven hundred twenty-five million, one hundred fifty-one thousand, five hundred seventy-four".