145621438946925 has 24 divisors (see below), whose sum is σ = 240957640027584. Its totient is φ = 77601263900160.

The previous prime is 145621438946903. The next prime is 145621438946933. The reversal of 145621438946925 is 529649834126541.

It is not a de Polignac number, because 145621438946925 - 2¹³ = 145621438938733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145621438946925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 793701892 + ... + 793885341.

It is an arithmetic number, because the mean of its divisors is an integer number (10039901667816).

Almost surely, 2^{145621438946925} is an apocalyptic number.

145621438946925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145621438946925 is a deficient number, since it is larger than the sum of its proper divisors (95336201080659).

145621438946925 is a wasteful number, since it uses less digits than its factorization.

145621438946925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587588469 (or 1587588464 counting only the distinct ones).

The product of its digits is 447897600, while the sum is 69.

The spelling of 145621438946925 in words is "one hundred forty-five trillion, six hundred twenty-one billion, four hundred thirty-eight million, nine hundred forty-six thousand, nine hundred twenty-five".