125783890 has 16 divisors (see below), whose sum is σ = 227587608. Its totient is φ = 50052096.

The previous prime is 125783873. The next prime is 125783923. The reversal of 125783890 is 98387521.

It can be written as a sum of positive squares in 4 ways, for example, as 39275289 + 86508601 = 6267^2 + 9301^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30657 + ... + 34516.

Almost surely, 2^125783890 is an apocalyptic number.

125783890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125783890 is a deficient number, since it is larger than the sum of its proper divisors (101803718).

125783890 is a wasteful number, since it uses less digits than its factorization.

125783890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65373.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 125783890 is about 11215.3417246199. The cubic root of 125783890 is about 501.0430094165.

The spelling of 125783890 in words is "one hundred twenty-five million, seven hundred eighty-three thousand, eight hundred ninety".