21532150134425 has 12 divisors (see below), whose sum is σ = 30514132762176. Its totient is φ = 14764902949200.

The previous prime is 21532150134353. The next prime is 21532150134487. The reversal of 21532150134425 is 52443105123512.

It is not a de Polignac number, because 21532150134425 - 2²² = 21532145940121 is a prime.

It is a super-2 number, since 2×21532150134425² (a number of 27 digits) contains 22 as substring.

It is a Curzon 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, 61520428781 + ... + 61520429130.

It is an arithmetic number, because the mean of its divisors is an integer number (2542844396848).

Almost surely, 2^{21532150134425} is an apocalyptic number.

21532150134425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21532150134425 is a deficient number, since it is larger than the sum of its proper divisors (8981982627751).

21532150134425 is a wasteful number, since it uses less digits than its factorization.

21532150134425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123040857928 (or 123040857923 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 21532150134425 its reverse (52443105123512), we get a palindrome (73975255257937).

The spelling of 21532150134425 in words is "twenty-one trillion, five hundred thirty-two billion, one hundred fifty million, one hundred thirty-four thousand, four hundred twenty-five".