133425691 has 8 divisors (see below), whose sum is σ = 159116544. Its totient is φ = 109392360.

The previous prime is 133425667. The next prime is 133425703. The reversal of 133425691 is 196524331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133425691 - 2⁵ = 133425659 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (133425661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414205 + ... + 414526.

It is an arithmetic number, because the mean of its divisors is an integer number (19889568).

Almost surely, 2^133425691 is an apocalyptic number.

133425691 is a deficient number, since it is larger than the sum of its proper divisors (25690853).

133425691 is an equidigital number, since it uses as much as digits as its factorization.

133425691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828761.

The product of its digits is 19440, while the sum is 34.

The square root of 133425691 is about 11551.0038957659. The cubic root of 133425691 is about 510.9908852890.

The spelling of 133425691 in words is "one hundred thirty-three million, four hundred twenty-five thousand, six hundred ninety-one".