1166440625 has 24 divisors (see below), whose sum is σ = 1666268352. Its totient is φ = 799830000.

The previous prime is 1166440619. The next prime is 1166440657. The reversal of 1166440625 is 5260446611.

It is not a de Polignac number, because 1166440625 - 2¹² = 1166436529 is a prime.

It is a super-3 number, since 3×1166440625³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4787 + ... + 48536.

It is an arithmetic number, because the mean of its divisors is an integer number (69427848).

Almost surely, 2^1166440625 is an apocalyptic number.

It is an amenable number.

1166440625 is a deficient number, since it is larger than the sum of its proper divisors (499827727).

1166440625 is an frugal number, since it uses more digits than its factorization.

1166440625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53355 (or 53335 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1166440625 is about 34153.1934817229. The cubic root of 1166440625 is about 1052.6586066251.

The spelling of 1166440625 in words is "one billion, one hundred sixty-six million, four hundred forty thousand, six hundred twenty-five".