125519801 has 8 divisors (see below), whose sum is σ = 141652800. Its totient is φ = 110173840.

The previous prime is 125519791. The next prime is 125519813. The reversal of 125519801 is 108915521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125519801 - 2²² = 121325497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125519201) 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, 196421 + ... + 197058.

It is an arithmetic number, because the mean of its divisors is an integer number (17706600).

Almost surely, 2^125519801 is an apocalyptic number.

125519801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125519801 is a deficient number, since it is larger than the sum of its proper divisors (16132999).

125519801 is a wasteful number, since it uses less digits than its factorization.

125519801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393519.

The product of its (nonzero) digits is 3600, while the sum is 32.

The square root of 125519801 is about 11203.5619782282. The cubic root of 125519801 is about 500.6921095268.

The spelling of 125519801 in words is "one hundred twenty-five million, five hundred nineteen thousand, eight hundred one".