1025511131 has 8 divisors (see below), whose sum is σ = 1035606000. Its totient is φ = 1015428960.

The previous prime is 1025511127. The next prime is 1025511161. The reversal of 1025511131 is 1311155201.

It is a happy number.

1025511131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1025511131 - 2² = 1025511127 is a prime.

It is a super-2 number, since 2×1025511131² = 2103346159609798322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025511101) 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, 275996 + ... + 279686.

It is an arithmetic number, because the mean of its divisors is an integer number (129450750).

Almost surely, 2^1025511131 is an apocalyptic number.

1025511131 is a deficient number, since it is larger than the sum of its proper divisors (10094869).

1025511131 is a wasteful number, since it uses less digits than its factorization.

1025511131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6349.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1025511131 is about 32023.6027173708. The cubic root of 1025511131 is about 1008.4324050157.

Adding to 1025511131 its reverse (1311155201), we get a palindrome (2336666332).

The spelling of 1025511131 in words is "one billion, twenty-five million, five hundred eleven thousand, one hundred thirty-one".