155531254015 has 32 divisors (see below), whose sum is σ = 199874304000. Its totient is φ = 115774837248.

The previous prime is 155531254003. The next prime is 155531254019. The reversal of 155531254015 is 510452135551.

It is not a de Polignac number, because 155531254015 - 2²⁵ = 155497699583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155531254019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2796246 + ... + 2851324.

It is an arithmetic number, because the mean of its divisors is an integer number (6246072000).

Almost surely, 2^155531254015 is an apocalyptic number.

155531254015 is a deficient number, since it is larger than the sum of its proper divisors (44343049985).

155531254015 is a wasteful number, since it uses less digits than its factorization.

155531254015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55479.

The product of its (nonzero) digits is 75000, while the sum is 37.

Adding to 155531254015 its reverse (510452135551), we get a palindrome (665983389566).

The spelling of 155531254015 in words is "one hundred fifty-five billion, five hundred thirty-one million, two hundred fifty-four thousand, fifteen".