1225355201 has 24 divisors (see below), whose sum is σ = 1505155680. Its totient is φ = 991896192.

The previous prime is 1225355141. The next prime is 1225355203. The reversal of 1225355201 is 1025535221.

It is not a de Polignac number, because 1225355201 - 2²⁶ = 1158246337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225355203) 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, 321161 + ... + 324953.

It is an arithmetic number, because the mean of its divisors is an integer number (62714820).

Almost surely, 2^1225355201 is an apocalyptic number.

It is an amenable number.

1225355201 is a deficient number, since it is larger than the sum of its proper divisors (279800479).

1225355201 is a wasteful number, since it uses less digits than its factorization.

1225355201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173 (or 4166 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1225355201 is about 35005.0739322173. The cubic root of 1225355201 is about 1070.0908884276.

The spelling of 1225355201 in words is "one billion, two hundred twenty-five million, three hundred fifty-five thousand, two hundred one".