1625140155 has 16 divisors (see below), whose sum is σ = 2616180480. Its totient is φ = 861422688.

The previous prime is 1625140093. The next prime is 1625140157. The reversal of 1625140155 is 5510415261.

It is not a de Polignac number, because 1625140155 - 2⁹ = 1625139643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1625140157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329895 + ... + 334784.

It is an arithmetic number, because the mean of its divisors is an integer number (163511280).

Almost surely, 2^1625140155 is an apocalyptic number.

1625140155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1625140155 is a deficient number, since it is larger than the sum of its proper divisors (991040325).

1625140155 is a wasteful number, since it uses less digits than its factorization.

1625140155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664850.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1625140155 is about 40313.0271128329. The cubic root of 1625140155 is about 1175.7011430234.

The spelling of 1625140155 in words is "one billion, six hundred twenty-five million, one hundred forty thousand, one hundred fifty-five".