125400031 has 8 divisors (see below), whose sum is σ = 130917600. Its totient is φ = 119962080.

The previous prime is 125400029. The next prime is 125400047. The reversal of 125400031 is 130004521.

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 125400031 - 2¹ = 125400029 is a prime.

It is a super-2 number, since 2×125400031² = 31450335549601922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125399978 and 125400014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125400731) 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, 16675 + ... + 22996.

It is an arithmetic number, because the mean of its divisors is an integer number (16364700).

Almost surely, 2^125400031 is an apocalyptic number.

125400031 is a deficient number, since it is larger than the sum of its proper divisors (5517569).

125400031 is a wasteful number, since it uses less digits than its factorization.

125400031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39809.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 125400031 is about 11198.2155274847. The cubic root of 125400031 is about 500.5328066990.

Adding to 125400031 its reverse (130004521), we get a palindrome (255404552).

The spelling of 125400031 in words is "one hundred twenty-five million, four hundred thousand, thirty-one".