1425501636 has 48 divisors (see below), whose sum is σ = 3737779584. Its totient is φ = 419544576.

The previous prime is 1425501607. The next prime is 1425501647. The reversal of 1425501636 is 6361055241.

It is a junction number, because it is equal to n+sod(n) for n = 1425501597 and 1425501606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195061 + ... + 202236.

It is an arithmetic number, because the mean of its divisors is an integer number (77870408).

Almost surely, 2^1425501636 is an apocalyptic number.

It is an amenable number.

1425501636 is an abundant number, since it is smaller than the sum of its proper divisors (2312277948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1425501636 is a wasteful number, since it uses less digits than its factorization.

1425501636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397340 (or 397338 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1425501636 is about 37755.8159228482. The cubic root of 1425501636 is about 1125.4405875275.

Adding to 1425501636 its reverse (6361055241), we get a palindrome (7786556877).

The spelling of 1425501636 in words is "one billion, four hundred twenty-five million, five hundred one thousand, six hundred thirty-six".