11405220025 has 24 divisors (see below), whose sum is σ = 14560372640. Its totient is φ = 8857175040.

The previous prime is 11405220011. The next prime is 11405220037. The reversal of 11405220025 is 52002250411.

It is not a de Polignac number, because 11405220025 - 2²⁷ = 11271002297 is a prime.

It is a super-2 number, since 2×11405220025² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11405219978 and 11405220005.

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, 142681 + ... + 207769.

Almost surely, 2^11405220025 is an apocalyptic number.

It is an amenable number.

11405220025 is a deficient number, since it is larger than the sum of its proper divisors (3155152615).

11405220025 is a wasteful number, since it uses less digits than its factorization.

11405220025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65305 (or 65300 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 11405220025 its reverse (52002250411), we get a palindrome (63407470436).

The spelling of 11405220025 in words is "eleven billion, four hundred five million, two hundred twenty thousand, twenty-five".