155025215320 has 32 divisors (see below), whose sum is σ = 360834555600. Its totient is φ = 59871806848.

The previous prime is 155025215311. The next prime is 155025215329. The reversal of 155025215320 is 23512520551.

It is an interprime number because it is at equal distance from previous prime (155025215311) and next prime (155025215329).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155025215329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66820054 + ... + 66822373.

Almost surely, 2^155025215320 is an apocalyptic number.

155025215320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155025215320 is an abundant number, since it is smaller than the sum of its proper divisors (205809340280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155025215320 is a wasteful number, since it uses less digits than its factorization.

155025215320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133642467 (or 133642463 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 155025215320 its reverse (23512520551), we get a palindrome (178537735871).

The spelling of 155025215320 in words is "one hundred fifty-five billion, twenty-five million, two hundred fifteen thousand, three hundred twenty".