21736263401425 has 12 divisors (see below), whose sum is σ = 26953031252736. Its totient is φ = 17388969021200.

The previous prime is 21736263401287. The next prime is 21736263401453. The reversal of 21736263401425 is 52410436263712.

It is not a de Polignac number, because 21736263401425 - 2²⁵ = 21736229846993 is a prime.

It is a super-2 number, since 2×21736263401425² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13652820 + ... + 15161530.

It is an arithmetic number, because the mean of its divisors is an integer number (2246085937728).

Almost surely, 2^{21736263401425} is an apocalyptic number.

21736263401425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21736263401425 is a deficient number, since it is larger than the sum of its proper divisors (5216767851311).

21736263401425 is a wasteful number, since it uses less digits than its factorization.

21736263401425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085008 (or 2085003 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 21736263401425 in words is "twenty-one trillion, seven hundred thirty-six billion, two hundred sixty-three million, four hundred one thousand, four hundred twenty-five".