25421229129660 has 144 divisors (see below), whose sum is σ = 88086815502336. Its totient is φ = 5363599977216.

The previous prime is 25421229129649. The next prime is 25421229129691. The reversal of 25421229129660 is 6692192212452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 179002204 + ... + 179144163.

It is an arithmetic number, because the mean of its divisors is an integer number (611713996544).

Almost surely, 2^{25421229129660} is an apocalyptic number.

25421229129660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25421229129660 is an abundant number, since it is smaller than the sum of its proper divisors (62665586372676).

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

25421229129660 is a wasteful number, since it uses less digits than its factorization.

25421229129660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358146412 (or 358146397 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 25421229129660 in words is "twenty-five trillion, four hundred twenty-one billion, two hundred twenty-nine million, one hundred twenty-nine thousand, six hundred sixty".