1125640894 has 16 divisors (see below), whose sum is σ = 1930608000. Its totient is φ = 482183064.

The previous prime is 1125640837. The next prime is 1125640903. The reversal of 1125640894 is 4980465211.

It is a congruent number.

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, 12057 + ... + 48955.

It is an arithmetic number, because the mean of its divisors is an integer number (120663000).

Almost surely, 2^1125640894 is an apocalyptic number.

1125640894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1125640894 is a deficient number, since it is larger than the sum of its proper divisors (804967106).

1125640894 is a wasteful number, since it uses less digits than its factorization.

1125640894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39087.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1125640894 is about 33550.5721858808. The cubic root of 1125640894 is about 1040.2393722920.

The spelling of 1125640894 in words is "one billion, one hundred twenty-five million, six hundred forty thousand, eight hundred ninety-four".