1231455100425 has 48 divisors (see below), whose sum is σ = 2221233546240. Its totient is φ = 597032488000.

The previous prime is 1231455100361. The next prime is 1231455100429. The reversal of 1231455100425 is 5240015541321.

It is not a de Polignac number, because 1231455100425 - 2⁶ = 1231455100361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1231455100429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17447356 + ... + 17517794.

It is an arithmetic number, because the mean of its divisors is an integer number (46275698880).

Almost surely, 2^{1231455100425} is an apocalyptic number.

1231455100425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1231455100425 is a deficient number, since it is larger than the sum of its proper divisors (989778445815).

1231455100425 is a wasteful number, since it uses less digits than its factorization.

1231455100425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91654 (or 91649 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 1231455100425 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-five million, one hundred thousand, four hundred twenty-five".