1161625254 has 16 divisors (see below), whose sum is σ = 2326280880. Its totient is φ = 386703360.

The previous prime is 1161625253. The next prime is 1161625271. The reversal of 1161625254 is 4525261611.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161625253) 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, 121267 + ... + 130494.

It is an arithmetic number, because the mean of its divisors is an integer number (145392555).

Almost surely, 2^1161625254 is an apocalyptic number.

1161625254 is an abundant number, since it is smaller than the sum of its proper divisors (1164655626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161625254 is a wasteful number, since it uses less digits than its factorization.

1161625254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252535.

The product of its digits is 14400, while the sum is 33.

The square root of 1161625254 is about 34082.6239306776. The cubic root of 1161625254 is about 1051.2080589891.

Adding to 1161625254 its reverse (4525261611), we get a palindrome (5686886865).

The spelling of 1161625254 in words is "one billion, one hundred sixty-one million, six hundred twenty-five thousand, two hundred fifty-four".