125440810 has 16 divisors (see below), whose sum is σ = 246320352. Its totient is φ = 45614800.

The previous prime is 125440801. The next prime is 125440811. The reversal of 125440810 is 18044521.

It is a super-2 number, since 2×125440810² = 31470793626912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125440811) 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, 570076 + ... + 570295.

It is an arithmetic number, because the mean of its divisors is an integer number (15395022).

Almost surely, 2^125440810 is an apocalyptic number.

125440810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125440810 is a deficient number, since it is larger than the sum of its proper divisors (120879542).

125440810 is a wasteful number, since it uses less digits than its factorization.

125440810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140389.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 125440810 is about 11200.0361606559. The cubic root of 125440810 is about 500.5870571248.

It can be divided in two parts, 125440 and 810, that multiplied together give a square (101606400 = 10080²).

The spelling of 125440810 in words is "one hundred twenty-five million, four hundred forty thousand, eight hundred ten".