1201545425 has 12 divisors (see below), whose sum is σ = 1510903296. Its totient is φ = 947696400.

The previous prime is 1201545409. The next prime is 1201545439. The reversal of 1201545425 is 5245451021.

It is not a de Polignac number, because 1201545425 - 2⁴ = 1201545409 is a prime.

It is a super-2 number, since 2×1201545425² = 2887422816676861250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336689 + ... + 340238.

It is an arithmetic number, because the mean of its divisors is an integer number (125908608).

Almost surely, 2^1201545425 is an apocalyptic number.

It is an amenable number.

1201545425 is a deficient number, since it is larger than the sum of its proper divisors (309357871).

1201545425 is an equidigital number, since it uses as much as digits as its factorization.

1201545425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677008 (or 677003 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 1201545425 is about 34663.3152626808. The cubic root of 1201545425 is about 1063.1145565789.

Adding to 1201545425 its reverse (5245451021), we get a palindrome (6446996446).

The spelling of 1201545425 in words is "one billion, two hundred one million, five hundred forty-five thousand, four hundred twenty-five".