11156541025 has 24 divisors (see below), whose sum is σ = 15816648384. Its totient is φ = 7647182400.

The previous prime is 11156540999. The next prime is 11156541029. The reversal of 11156541025 is 52014565111.

It is not a de Polignac number, because 11156541025 - 2¹⁵ = 11156508257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11156541029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 489534 + ... + 511816.

It is an arithmetic number, because the mean of its divisors is an integer number (659027016).

Almost surely, 2^11156541025 is an apocalyptic number.

It is an amenable number.

11156541025 is a deficient number, since it is larger than the sum of its proper divisors (4660107359).

11156541025 is a wasteful number, since it uses less digits than its factorization.

11156541025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25161 (or 25156 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

The spelling of 11156541025 in words is "eleven billion, one hundred fifty-six million, five hundred forty-one thousand, twenty-five".