125501155 has 16 divisors (see below), whose sum is σ = 162658944. Its totient is φ = 92407680.

The previous prime is 125501149. The next prime is 125501171. The reversal of 125501155 is 551105521.

It is not a de Polignac number, because 125501155 - 2³ = 125501147 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21225 + ... + 26485.

It is an arithmetic number, because the mean of its divisors is an integer number (10166184).

Almost surely, 2^125501155 is an apocalyptic number.

125501155 is a deficient number, since it is larger than the sum of its proper divisors (37157789).

125501155 is a wasteful number, since it uses less digits than its factorization.

125501155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5646.

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 125501155 is about 11202.7298012583. The cubic root of 125501155 is about 500.6673156501.

Adding to 125501155 its reverse (551105521), we get a palindrome (676606676).

The spelling of 125501155 in words is "one hundred twenty-five million, five hundred one thousand, one hundred fifty-five".