125504478 has 40 divisors (see below), whose sum is σ = 306793080. Its totient is φ = 38031120.

The previous prime is 125504459. The next prime is 125504497. The reversal of 125504478 is 874405521.

It is an interprime number because it is at equal distance from previous prime (125504459) and next prime (125504497).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33433 + ... + 36996.

It is an arithmetic number, because the mean of its divisors is an integer number (7669827).

Almost surely, 2^125504478 is an apocalyptic number.

125504478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

125504478 is an abundant number, since it is smaller than the sum of its proper divisors (181288602).

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

125504478 is a wasteful number, since it uses less digits than its factorization.

125504478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70454 (or 70445 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 125504478 is about 11202.8781123424. The cubic root of 125504478 is about 500.6717344748.

Adding to 125504478 its reverse (874405521), we get a palindrome (999909999).

The spelling of 125504478 in words is "one hundred twenty-five million, five hundred four thousand, four hundred seventy-eight".